VR射线拾取

 射线拾取其实很简单，这个加多了个shader

脚本要挂载在里，

namespace VRTK { 
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class RayPick : MonoBehaviour
{
	public bool IsUse = true;

//外发光的shader

public  Shader  outLine;

LineRenderer m_Renderer;GameObject oldObj;// Use this for initializationvoid Start(){}void Awake() {m_Renderer = GetComponent<LineRenderer>();}// Update is called once per framevoid Update(){if (IsUse){Ray camRay = new Ray(transform.position, transform.forward);RaycastHit Hit;if (m_Renderer == null)gameObject.AddComponent<LineRenderer>();m_Renderer.SetPosition(0, transform.position);if (m_Renderer.enabled == false)m_Renderer.enabled = true;if (Physics.Raycast(camRay, out Hit, Mathf.Infinity)) // 射线 捡取{m_Renderer.SetPosition(1, Hit.point);if (Hit.transform.CompareTag("PickItem")){     //射线进入oldObj = Hit.transform.gameObject; oldObj.GetComponent<MeshRenderer>().materials[1].shader = outLine;//视线捡取，当按下toupaid 左边建，视线对焦物品 按下griss就可以捡取if (GetComponentInChildren<VRTK_ControllerEvents>().gripPressed == true){oldObj.GetComponent<MeshRenderer>().materials[1].shader = null;float a = Mathf.Sign(Vector3.Dot(transform.forward, oldObj.transform.position));oldObj.transform.position = transform.position - new Vector3(-0.25f, 0, 0.25f) * a;m_Renderer.enabled = false;IsUse = false;}}else{if (oldObj != null)oldObj.GetComponent<MeshRenderer>().materials[1].shader = null;}}else{if (oldObj != null)oldObj.GetComponent<MeshRenderer>().materials[1].shader = null;}}else{if (oldObj != null) { oldObj.GetComponent<MeshRenderer>().materials[1].shader = null;oldObj = null;}}}public void m_use(){IsUse = true;}public void PickItem(){}void OnEnter(){}void OnExit(){}}}

另外，如果射线没有碰到collider, 也需要做一些处理，解决方法一，在子物体上放个空物体,位置调位（0，0，0） Vector3.zero

然后把空物体的z位置调高，这个空物体就作为line的终点，就将lineRender的第二个position设置为这个空物体即可。

当然你也可以直接继承point类，但是我觉得point里面有些没必要的于是就写多了这个。新手起步，大神勿喷。谢谢宝贵意见。